.container {
  position: relative;
  font-size: .16rem;
}

a {
  text-decoration: none;
}

header {
  height: .5rem;
  background: blue;
  flex-shrink: 0;
}

main {
  flex: 1;
  background: yellow;
  overflow-y: scroll;
}

main div {
  margin: .5rem auto;
  height: 1rem;
  width: 80%;
  background: white;
  margin-top: .1rem;
  border: .05rem solid orange;
  border-radius: .5rem;
}

.float_bottom {
  width: 1.5rem;
  height: .6rem;
  background: red;
  flex-shrink: 0;
  position: absolute;
  border-radius: 1rem;
  bottom: .6rem;
  left: 1.12rem;
  text-align: center;
  line-height: .6rem;
  color: white;
  font-size: .2rem;
  border: 0.02rem solid #c40000;
}

.float_right {
  width: .5rem;
  height: .5rem;
  background: pink;
  flex-shrink: 0;
  position: absolute;
  border-radius: 100%;
  right: .1rem;
  top: 2rem;
  text-align: center;
  line-height: .5rem;
  color: white;
  font-size: .2rem;
  border: 0.02rem solid #ff95a7;
}

footer {
  flex-shrink: 0;
  height: .5rem;
  background: blue;
}
